In contrast to participants who had serum levels of 20 to 29 ng/ml ( i . e. , clinical insufficiency ), those who maintained a vitamin D blood serum level of 50 ng/ml or higher ( i . e. , the truly optimal vitamin D level we should be aiming for, according to experts ) during the three-year follow-up reduced their diabetes risk by a whopping 76 %, compared to those in the group of test participants who had serum levels of 20 to 29 ng /

Supply website